Building board or slab



c, w. STEVENS, BUILDING-BOARD 0R SLAB. APPLICATiGN YILIED4 OCT. 13x, 19 2\).

gtented Nov. i?? 1922.

atented Nov. 7, 1922.

mana

CHARLES STEVENS, *F DETBOT, MICHIGAN.

BULDING BOARD 0E SLAB.

'Application :led october 13, 1920. Serial No. 416,872.

ToaZZ 'whom zt may concern Be it known that I, l CHARLES W. Srnvnus, a citizen of the United States, residin at Detroit, in the county of lWayne and late of Michigan, have invented certain new and useful Improvements in Building Boards or Slabs, of which the following is a specication, reference being had to the accompany- 'in drawings.

he present invention aims for its purpose to provide a building board or slab constructed of any suitable plastering material preferably cement or concrete, including a requisite amount of clear sand or gravel, and desi ed to be fastened to the outer face of a buiding frame in break joint fashion,

. so that when completing the construction of the building, the outer face will appear as though it is constructed of large stones or sla Another purpose is to provide a building slab or board including means to attach the slab or board to the studdings of a building frame, that is to say when surfacing the Sides of the frame.

A still further purpose is to provide a building slab or board, wherein a plurality of laths is embedded in one face of the board or slab, thereby not only reinforcing the plastic material of the slab or board, but also affording means, whereby the board or slab may be attached to the studdings, namely to receive nails to hold the board or slab in position.

A further purpose is to provide a building slab or board of plastic material and laths which may be made in an proportions, or constructed in whole or half lengths.

While the design and construction at present illustrated and set forth is deemed preferable, itis obvious that as a result of a reduction of the invention to a more practical form for commercial purposes, the invention may be susceptible of changes, and the right to these changes is claimed, provided they are comprehended within the scope of what `is claimed. y l The invention compr1ses further features 2--2 of Figure 1.

. Figure 3 is a view in elevation of a por-l tion of a building frame, showing a plurality of Abuilding boards or vslabs as applied, in break joint fashion, there being some of the studs of the building projecting above the slabs. l

Figure a is a longitudinal sectional view on line 4 4 of Figure 1.

Figure 5 is a view of the base of the mold, when the frame of the mold has been lifted.

Figure 6 is a perspective of a slab which maybe cut transversely to form half sections. y

Referring more especially to the drawings, 1 designates a wall of a portion of the building, and 2 denote the studdings thereof, and to which the buildin slabs or boards of the wall are fastened. shown in Figure l each building slab or board comprises a plurality of longitudinally extendin laths or strips 4. The adjacent edges 0% these laths are bevelled as shown at 5. The laths 4 have their ends provided 'with bevels 6. The bevels 5 and 6 converge in di-4 the plastic material as shown at 7 and 8,

thereby affording means to receive nails or other securing means, for holding the boards or slabs to the studdings.

While the building slab or board can be constructed in various proportions, it has been found most eential to construct the slab or board, so as to overlie at least three of the studdings, thereby not only reinforcing the slabs or boards more thoroughly, but also affording a building having greater' strength and rigidity. `'lhe slabs or boards may be constructed in half sections, so as to extend overtwo of the studdings, at the corners of the building, and adjacent the window and door frames.

Before applying the building boards or slabs to studding, sheets of moisture or weather-proof paper, such as tar paper, or sheets of asbestos, or other like material as indicated. at 9 are fastened to the studding 2.' After applying the moisture or weatherproof paper to the studdings, the building slabs or boards are placed in position with their longitudin-al and end edges spaced as shown for the reception of pointing up mortar or other plastic material, as indicated at 10, previously referred to. This pointing up mortar or plastic material engaging between the bevels of the laths or strips of the slabs or boards, not only act to hold the mortar in position, but also to render the 'slabs or boards more rigid and secure. It will be also noted that the moisture or weather-proof paper prevents the mortar fromfalling entirel through the spaces between thel slabs lor lioards, as this paper is heavy and isnot effected by the moisture of the l-astic material or mortar.

As shown in igure 6 a half section of building board or slab may be constructed. This may be accomplished when construct ing the building board or slab. For instance the laths or strips are exposed as indicated at 11 in Figure 6 so that the slab 'or board may be severed or sawed in half. In other words and as suiiicient of the laths or slabs are eX- posed, enough of the laths or strips are allowed to project beyond the plastic material to correspond with the projecting ends o adjacent slab, so as to receive nails or other securin means to hold the half sections to the stu ding.

Also should it be desired to use additional securing means, the cement, concrete or other plastic material may be formed with openings transversely of the center of each slab or board, while the material is in a moist condition. These openings 12, as shown in Figure 1 are arranged immediately adjacent the laths or strips embedded in the slab, so that nails or other securing means may be inserted through the openings, and then driven through the laths. After using'such additional securing means the openings may be pointed up in the same manner as the spaces between the slabs are pointed up.

The building slab or board, after its completion, may appear as though it is constructed of a number of bricks. The face of the slab'or board may have any suitable design. For instance it may be with scroll work, or a design in imitation of stucco work, or may -resemble pebble dash, or be sti pled.

n order to construct half slabs or boards,

the laths or strips may be cut,v

the slab during its construction may be provided with a space between end portions of the plastic material as shown at 11, so as to permit the exposed portions of the laths 8 to be sawed, or otherwise cut or severed centrally, in which case the laths 8 will extend beyond the plastic material, in the same manner as the laths extend on the remote ends of the slab.

The invention having been set forth, is claimed as being useful is 1. As a new article of manufacture, a building slab comprising a body of set plastic material, a plurality of relatively spaced parallel laths embedded in one face of the body, the adjacent edges of the laths lbeing undercut to insure holding the plastic material to the laths, the remote longitudinal laths having their longitudinal edges exposed to receive fastening means and also being undercut, to retain the plastic material to be used between two adjacent slabs, said laths having their ends exposed to receive fastening means, and also being undercut to cooperate with the plastic material to be arranged between the adjacent ends of two slabs, the intermediate laths having 'fastening means passing through them, and which are adapted to be driven into the studding, to hold the slab in position.

2. A wall constructedl of a plurality of building slabs, each slab comprising a body of set plastic material, a plurality of relatively spaced parallel laths embedded in one face of the body, the adjacent edges of the laths being undercut to insure holding the plastic material to the laths` the remote longitudinal laths having their longitudinal edges exposed to receive fastening means and lalso being undercut, to retain the plastic material to be used between two adjacent slabs, said laths having their ends exposed to receive fastening means, and also being .undercut to cooperate with the plastic material to be arranged between the adjacent ends of the slabs, the intermediate laths having fastening means passing through them, and which are adapted to be driven into the studding, to hold the slab in position, the body of the slab on its outer face having longitudinal and transverse grooves whlch extend to the surfaces of the laths to permit the fastening means of the intermediate laths to be driven therethrough, and fillers of plastic material subsequently deposited in said grooves to cover said fastening means.

In testimony whereof l hereunto affix my signature.

CHARLES W. STEVENS.

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